摘要
针对干湿并联冷却系统变工况的计算,提出了干湿并联冷却系统机组排汽压力变工况计算的数学模型。以300MW干湿并联冷却机组为例,得出了环境干球温度、环境湿度、空冷岛迎面风速和机组排汽量对机组排汽压力的影响规律,分析了干湿并联冷却机组冷端的变工况特性,从而为提高干湿并联冷却机组的安全性、经济性和性能提供了理论依据。
A mathematical model was set up for calculating the exhaust steam pressure of a dry/wet hybrid cooling system under variable working conditions. Taking a 300 MW dry/wet hybrid cooling system as an example, the influence of following factors on the exhaust steam pressure was analyzed, such as the dry-bulb temperature, the ambient humidity, the face velocity in air cooling island and the exhaust volume of unit, etc., while the characteristics of its cold end studied, whic~ may serve as a theoretical basis for improving the safety, economical efficiency and performance of the dry/wet hybrid cooling system.
出处
《发电设备》
2013年第5期301-306,共6页
Power Equipment
关键词
火电机组
干湿并联
变工况
空冷凝汽器
湿冷凝汽器
热负荷分配
thermal power unit
dry/wet hybrid system
variable working condition
air-cooled condenser
water-cooled condenser
thermal load distribution
